Refrigerating apparatus.



' No.78o,oo. I PATBNTED JAN. 24, 190.5.

I 0.1.. DALY. RBFRIGERATING APPARATUS.

APPLICATION FILED JUNE 15, 1903.

UNITED STATES Patenlsed .anuary .'24, 1905.

CHRISTOPHER L. DALY, OF PEORIA, ILLINOIS.

l-:FmGERATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 780,600, dated January 24, 1905. Application filed June 15, 1903, Serial No. 161,509.

To all whom if may concern.'

Be it known that I, CHRISTOPHER L. DALY, a citizen ofthe United. States, residing at Peoria, in the county of Peoria and State-of Illinois, have invented certain new and useful Improvements in Refrigerating Apparatus; andI do hereby declare that the following' is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to makeand use the same.

This invention has reference to mechanism for improving the'circulation in refrigeratorcars and other refrigerating apparatus.

The invention relates more especially to that class of refrigerator-cars provided with iceboxes at their opposite ends having wire netting or screens at the top and with suitable openings in the bottom portions thereof, which permit cold .air to leave at the bottom of the box, circulate into the body of the car, and force warm air into the top of the ice-boxes. By the use of the ice-boxes alone the product which is placed. close to the boxes receives a much stronger refrigeration than that loaded in the center of the car or adjacent to the doors, where more or less hot air enters.

My invention therefore has for its primary object to provide mechanism which will of itself create a current and siphon the hot air out of the center of the car and into the iceboxes at the ends thereof; further, making such mechanism adjustable for the purpose of giving a strong or mild circulation.

With these ends in view my invention consists in certain features of novelty in the construction, combination, and arrangement of parts whereby the said objects and certain other objects hereinafter appearing are accomplished, all as willv now be fully described i withreference to the accompanying drawings, and more particularly pointed out in th'e claims. j

In the said drawings, Figure l is a vertical longitudinal section of a refrigerator-car with my improvements attached thereto. Fig. 2 is a detail of certain parts of the device.

l represents the usual outer wooden wall of the refrigerator-car body lined with a false Wall 2, and indicates the bottom of the car,

' which isy also lined with wall 2. i Extending over the same, as shown, and overlying said bottom and wall 2 is a false bottom 4, com-l posed of a skeleton frame or number of slats, as usual, forming the air spaces or shafts 5, communicating with an air-passage 6, which at its opposite ends communicates with the lower `open ends of ice-boxes to be described. Between the outer walls bottom and false wall 2 is illed with a suitable insulation 7 in the ordinary manner.

Theice-boxes are indicated as 8, having the inner presented walls 9 of suitable material,

Wall, or air-shaft of a refrigeratingcar or apparatus, preferably supported on an incline when using it in a car, but disposing it in any suitable position in other apparatus by means of which the desired refrigeration may be obtained. The same is used in series. In

a car the ends of the air-shaft are carried close up to the top of the car and adjacent to the screened portions of the ice-boxes and pivoted to the sides of the car at al point 13. When two shafts are employed, as in Fig. l, the adjacent ends of opposite shafts are in close proximity to each other and disposed so that they are approximately in the center of the car, and to the end of each shaft at 14E is attached a chain 15 for raising or lowering the inner adjacent ends of the shafts 12 and s fix thel same in such adjusted positions by catching the free ends of the chains'to hooks 16 in the top of the car. By this means the shafts may be swung on their pivots 13 and the incline of the shafts made to correspond or not and placed at any-suitable. angle.

The air-shafts are composed of the side walls 17 and the upper and lower coverings 18 and -19, leaving the open ends 20 and 2l. In the IOC lower covering or wall 19 I provide the openings 22, covered by the overlying lips or deiectors 23, which may be, as shown, an integral part with the lower wall 19 and curved upwardly and forwardly, as seen, to provide the covering-plates 23, and by such arrangement of openings and covering-plates a current is established through each of said openings, which lead to a current established by such a circulation in the shaft above the plates or deectors 23 and indicated as 24. The openings are arranged and disposed in the wall of the shaft so as to leave a somewhatextended solid lower wall 25, leading from the end of the shaft adjacent to theice-boxes, which will prevent the admission of too much air in the forward ends of the shafts and block the passage of air from the center of the car, where it is most desired to take it from. Thus a current being established through the shaft and the openings 22 thereof, which are distributed in the bottom of the shaft to form air-shafts from different points of the car, thel dead air is siphoned from all parts of the car through the inner adjacent ends of the shafts and openings thereof and discharged into the ice-boxes, as is apparent. The heated air being cooled descends into the boxes and finds its way out into the passage 6 and up through the slatted bottom 4, following the air-currents established as the air becomes heated. The natural tendency of the heat being to rise, in a car of this character minus the air-shafts or similar devices to produce a circulation there is a tendencjT to form a vacuum in the center of the car which heats the product, and it is this dead air which I aim to convey away. The formation of the shaft, raising or lowering the same, decreases or increases the circulation, and the arrangement of its various openings and coverings establishes reverse currents from the body of the car which are not interfered with and do not cross each other, which of course would destroy the object sought after.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

1. In combination with a car having ieecompartments, air-shafts extending from the upper end of the compartments to a point approximately the center of the car, pivoted at their outer ends to the body of the car and means at their inner ends for raising and lowering the shafts and for fixing them in their raised or lowered positions, a bottom for said shafts extending from the outer end inwardly to a suitable point, and the remainder of the shaft provided at intervals with air-inlets, substantially for the purposes set forth.

2. In combination with a ear having icecompartments, a pair of air-shafts having their outer ends pivoted to the sides of the car ad,- jacent to the ice-compartments and their inner matching ends extending to a point approxi- 65 mately the center of the car, means for su pporting the inner ends of the air-shafts in adjusted positions, a bottom for the air-shafts provided at intervals with air-inlets and de- Hectors overlying the said air-inlets adapted 70 to defiect the air entering the air-inlets of the air-shaft from the body of the car to the cpnosite ends thereof, substantially as speci- In testimony whereof I aiiix my signature in 75 presence of two witnesses.

CHRISTOPHER L. DALY.

Witnesses:

GHAs. W. LA PORTE, ROBERT N. MCCORMICK. 

